Russia’s moves to mobilize thousands more troops and to annex more of Ukraine’s territory signal a new, potentially more dangerous phase of the war.

Germany, once dangerously dependent on Russian energy, has defied Russian expectations in its reaction to war in Ukraine.

Daniel Noboa Azín is the youngest president in Ecuador’s history and faces immediate challenges in tackling the country’s grave economic and security crises.

Amid renewed calls for changes in the world order, U.S. President Joe Biden sought to stress his support for greater inclusion of developing nations in addressing economic, social, and climate concer…

Climate change is fueling geopolitical competition in the Arctic. An independent Greenland could play an important role in years to come.

A pending U.S. withdrawal from the Treaty on Open Skies has alarmed some allies in Europe, who fear losing a valuable means of monitoring Russia.

As Putin tries to manage Russia’s coronavirus outbreak, the national security bureaucracy faces challenges and opportunities of its own.